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drm/panel: Add Samsung AMS581VF01 panel driver
Add the driver for Samsung AMS581VF01 SOFEF01-based 5.81" FHD Plus CMD mode OLED panel support found in Google Pixel 4a (sm7150-google-sunfish) Signed-off-by: Danila Tikhonov <[email protected]> Reviewed-by: Dmitry Baryshkov <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Neil Armstrong <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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‎drivers/gpu/drm/panel/Kconfig

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@@ -614,6 +614,15 @@ config DRM_PANEL_RONBO_RB070D30
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Say Y here if you want to enable support for Ronbo Electronics
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RB070D30 1024x600 DSI panel.
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config DRM_PANEL_SAMSUNG_AMS581VF01
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tristate "Samsung AMS581VF01 panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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help
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Say Y or M here if you want to enable support for the
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Samsung AMS581VF01 FHD Plus (2340x1080@60Hz) CMD mode panel.
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config DRM_PANEL_SAMSUNG_AMS639RQ08
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tristate "Samsung AMS639RQ08 panel"
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depends on OF

‎drivers/gpu/drm/panel/Makefile

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@@ -62,6 +62,7 @@ obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o
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obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o
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obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM69380) += panel-raydium-rm69380.o
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obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMS581VF01) += panel-samsung-ams581vf01.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMS639RQ08) += panel-samsung-ams639rq08.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o
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obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o

‎drivers/gpu/drm/panel/panel-samsung-ams581vf01.c

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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2024, Danila Tikhonov <[email protected]>
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*/
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_probe_helper.h>
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/* Manufacturer Command Set */
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#define MCS_ACCESS_PROT_OFF 0xb0
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#define MCS_PASSWD 0xf0
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struct ams581vf01 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct gpio_desc *reset_gpio;
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struct regulator_bulk_data *supplies;
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};
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static const struct regulator_bulk_data ams581vf01_supplies[] = {
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{ .supply = "vdd3p3" },
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{ .supply = "vddio" },
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{ .supply = "vsn" },
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{ .supply = "vsp" },
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};
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static inline struct ams581vf01 *to_ams581vf01(struct drm_panel *panel)
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{
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return container_of(panel, struct ams581vf01, panel);
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}
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static void ams581vf01_reset(struct ams581vf01 *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(10000, 11000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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}
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static int ams581vf01_on(struct ams581vf01 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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/* Sleep Out, Wait 10ms */
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mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
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usleep_range(10000, 11000);
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/* TE On */
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mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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/* MIC Setting */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD, 0x5a, 0x5a); /* Unlock */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xeb, 0x17,
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0x41, 0x92,
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0x0e, 0x10,
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0x82, 0x5a);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD, 0xa5, 0xa5); /* Lock */
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/* Column & Page Address Setting */
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mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x0437);
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mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x0923);
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/* Brightness Setting */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
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/* Horizontal & Vertical sync Setting */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD, 0x5a, 0x5a); /* Unlock */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x09);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe8, 0x11, 0x30);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD, 0xa5, 0xa5); /* Lock */
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mipi_dsi_msleep(&dsi_ctx, 110);
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/* Display On */
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mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
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return dsi_ctx.accum_err;
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}
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static void ams581vf01_off(struct ams581vf01 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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/* Display Off & Sleep In */
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mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 20);
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mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
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/* VCI operating mode change */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD, 0x5a, 0x5a); /* Unlock */
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_ACCESS_PROT_OFF, 0x05);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MCS_PASSWD, 0xa5, 0xa5); /* Lock */
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mipi_dsi_msleep(&dsi_ctx, 120);
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}
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static int ams581vf01_prepare(struct drm_panel *panel)
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{
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struct ams581vf01 *ctx = to_ams581vf01(panel);
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int ret;
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ret = regulator_bulk_enable(ARRAY_SIZE(ams581vf01_supplies),
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ctx->supplies);
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if (ret < 0)
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return ret;
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ams581vf01_reset(ctx);
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ret = ams581vf01_on(ctx);
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if (ret < 0) {
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(ams581vf01_supplies),
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ctx->supplies);
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return ret;
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}
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return 0;
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}
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static int ams581vf01_unprepare(struct drm_panel *panel)
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{
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struct ams581vf01 *ctx = to_ams581vf01(panel);
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ams581vf01_off(ctx);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(ams581vf01_supplies),
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ctx->supplies);
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return 0;
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}
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static const struct drm_display_mode ams581vf01_mode = {
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.clock = (1080 + 32 + 73 + 98) * (2340 + 8 + 1 + 8) * 60 / 1000,
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.hdisplay = 1080,
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.hsync_start = 1080 + 32,
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.hsync_end = 1080 + 32 + 73,
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.htotal = 1080 + 32 + 73 + 98,
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.vdisplay = 2340,
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.vsync_start = 2340 + 8,
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.vsync_end = 2340 + 8 + 1,
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.vtotal = 2340 + 8 + 1 + 8,
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.width_mm = 62,
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.height_mm = 134,
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.type = DRM_MODE_TYPE_DRIVER,
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};
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static int ams581vf01_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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return drm_connector_helper_get_modes_fixed(connector, &ams581vf01_mode);
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}
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static const struct drm_panel_funcs ams581vf01_panel_funcs = {
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.prepare = ams581vf01_prepare,
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.unprepare = ams581vf01_unprepare,
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.get_modes = ams581vf01_get_modes,
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};
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static int ams581vf01_bl_update_status(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness = backlight_get_brightness(bl);
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return 0;
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}
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static const struct backlight_ops ams581vf01_bl_ops = {
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.update_status = ams581vf01_bl_update_status,
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};
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static struct backlight_device *
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ams581vf01_create_backlight(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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const struct backlight_properties props = {
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.type = BACKLIGHT_RAW,
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.brightness = 511,
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.max_brightness = 1023,
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};
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&ams581vf01_bl_ops, &props);
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}
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static int ams581vf01_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct ams581vf01 *ctx;
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int ret;
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ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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ret = devm_regulator_bulk_get_const(&dsi->dev,
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ARRAY_SIZE(ams581vf01_supplies),
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ams581vf01_supplies,
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&ctx->supplies);
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if (ret < 0)
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return dev_err_probe(dev, ret, "Failed to get regulators\n");
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
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if (IS_ERR(ctx->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
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"Failed to get reset-gpios\n");
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ctx->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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dsi->lanes = 4;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
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MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
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drm_panel_init(&ctx->panel, dev, &ams581vf01_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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ctx->panel.prepare_prev_first = true;
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ctx->panel.backlight = ams581vf01_create_backlight(dsi);
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if (IS_ERR(ctx->panel.backlight))
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return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
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"Failed to create backlight\n");
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drm_panel_add(&ctx->panel);
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ret = devm_mipi_dsi_attach(dev, dsi);
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if (ret < 0) {
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drm_panel_remove(&ctx->panel);
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return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
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}
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return 0;
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}
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static void ams581vf01_remove(struct mipi_dsi_device *dsi)
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{
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struct ams581vf01 *ctx = mipi_dsi_get_drvdata(dsi);
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drm_panel_remove(&ctx->panel);
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}
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static const struct of_device_id ams581vf01_of_match[] = {
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{ .compatible = "samsung,ams581vf01" },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, ams581vf01_of_match);
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static struct mipi_dsi_driver ams581vf01_driver = {
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.probe = ams581vf01_probe,
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.remove = ams581vf01_remove,
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.driver = {
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.name = "panel-samsung-ams581vf01",
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.of_match_table = ams581vf01_of_match,
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},
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};
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module_mipi_dsi_driver(ams581vf01_driver);
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MODULE_AUTHOR("Danila Tikhonov <[email protected]>");
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MODULE_DESCRIPTION("DRM driver for SAMSUNG AMS581VF01 cmd mode dsi panel");
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MODULE_LICENSE("GPL");

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